Product Overview
The CA-50 series of calcium aluminate cement products produced by Ambition Ceramics
Co., Ltd. (hereinafter referred to as "Ambition") are hydraulic binding agents with an
alumina content of about 50–60%.
Because the CA phase (monocalcium aluminate) is the main mineral phase of the CA-50
series, these products offer not only excellent high-temperature service performance, but
also reasonable and stable hydrating capacity, rapid strength development, and outstanding
mechanical strength.
Based on the development of hydrated strength and the corresponding mechanical strength,
Ambition classifies its CA-50 series into different grades, helping customers select the
right product for their needs and service conditions. By optimizing product performance in
production, the cement suits different monolithic refractory construction methods (e.g.
casting and gunning) and meets the workability requirements of various castable formula
systems — including traditional high-cement combined castables (CC) and medium-cement
combined castables (MCC).
This series contains no additives, assuring the applicability and stability of the
products.
Performance of Product
This standard applies to the CA-50 series of calcium aluminate cement products, including
the A500, A600, A700 and A900 grades produced by Ambition. GB 201-2000 is included in the
tables below as a basic reference standard.
Chemical Composition
| Characteristic |
Unit |
CA-50 GB201-2000 |
A600 |
| Al2O3 | % | ≥ 50, < 60 | ≥ 50, < 60 |
| SiO2 | % | ≤ 8.0 | ≤ 8.0 |
| Fe2O3 | % | ≤ 2.5 | ≤ 2.5 |
| R2O | % | ≤ 0.4 | ≤ 0.4 |
| S (total sulfur) | % | ≤ 0.1* | – |
| Cl | % | ≤ 0.1* | – |
Physical Property
| Characteristic |
Unit |
CA-50 GB201-2000 |
A600 |
| Fineness (0.045 mm sieve residue) | % | < 20 | < 20 |
| Blaine specific surface area | m2/kg | ≥ 300 | ≥ 300 |
| Initial setting time | h:min | ≥ 0:30 | ≥ 0:30 |
| Final setting time | h:min | ≤ 6:00 | ≤ 6:00 |
| Flexural strength — 1 d | MPa | ≥ 5.5 | ≥ 5.5 |
| Flexural strength — 3 d | MPa | ≥ 6.5 | ≥ 6.5 |
| Compression strength — 1 d | MPa | ≥ 40 | ≥ 40 |
| Compression strength — 3 d | MPa | ≥ 50 | ≥ 50 |
* Per GB 201-2000, results for marked items may be provided when the user
has special requirements and there is agreement between seller and buyer; fineness is
determined on the basis of specific surface area.
- Chemical composition: per GB/T 205-2000 (except total sulfur and chlorine).
- Specific surface area: per GB/T 8074.
- Fineness: per GB/T 1345; a sieve with 0.045 mm mesh should be used.
- Setting time: per Annex A of GB 201-2000.
- Strength: per the modified provisions in GB/T 17671 and GB 201-2000.
Reference Information
The following data are provided only for reference during use of the product:
- Main mineral phase: CA*
- Secondary mineral phases: C12A7, C2AS, CT*
* C = CaO, A = Al2O3, S = SiO2, T = TiO2
Product Packing
This series is packed in 25 kg bags — 50 bags per packing unit (25 kg × 50) — or
supplied in big bags (jumbo bags). Other forms of packing and unit weights may be
determined by seller and buyer through consultation.
Transportation and Storage
During transportation and storage of calcium aluminate cement, special attention should
be paid to preventing moisture, to extend shelf life and avoid affecting product
performance.
During transportation, storage and use, measures should be taken to prevent the cement
from contacting other types of cement (e.g. Portland cement) and harmful impurities (e.g.
lime).
During use, the water used for mixing should be clean, to prevent product performance from
being affected by harmful impurities that may be present.
